2- In SMBX 1.3 (and all 2D mario games) if you hold "up" key when you press "jump", the player will go higher:
(First: without "up", Second: with "up" pressed)
- Spoiler

3- When you swim, after you leave the water the player should not produce the sound effect "jump", only "swim".
4- In the NSMB games, in the mini-form you can only be stand on water if you're moving, else you fall.
- Spoiler


